HomeWordPress vulnerabilitiesMarkup Markdown
Markup Markdown vulnerabilities
Markup Markdown has 2 known vulnerabilities in this database. The most recent published record is dated 22 Sep 2025.
- Known vulnerabilities
- 2
- Active installs
- 1,000+
- Latest version
- 4.0.2
- Last updated
- 8 Sep 2026
- Most recent
- 22 Sep 2025
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Cross-site scripting (XSS) CVE-2025-9540 | Medium 4.7 | Before 3.20.10 | Fixed in 3.20.10 | 22 Sep 2025 |
| Cross-site scripting (XSS) CVE-2025-9541 | Medium 4.7 | Before 3.20.10 | Fixed in 3.20.10 | 22 Sep 2025 |
Read the published descriptions
- CVE-2025-9540, 22 Sep 2025
- The Markup Markdown WordPress plugin before 3.20.10 allows links to contain JavaScript which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks. CVE record
- CVE-2025-9541, 22 Sep 2025
- The Markup Markdown WordPress plugin before 3.20.10 allows links to contain JavaScript which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks. CVE record
What to do if you run Markup Markdown
If you run Markup Markdown, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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